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Optimization of extrusion parameters for preparing poly(e-caprolactone) layered silicate nanocomposites supported by twin-screw extrusion modelling Vrije Universiteit Brussel
PCL-based nanoclay (layered silicate) nanocomposites are prepared using a small scale intermeshing co-rotating twin-screw extruder. Improving the level of nanoclay dispersion in PCL nanocomposites is obtained by changing the extrusion parameters. Increasing the screw speed and decreasing the throughput
leads to an improved dispersion quality, as observed from the improved mechanical properties of the nanocomposites as well as from their ...
leads to an improved dispersion quality, as observed from the improved mechanical properties of the nanocomposites as well as from their ...
Extrusion Pressure Generated in High Alumina Content Paste Extrusion KU Leuven
Four different alumina pastes with various solvent volume fractions were processed by extrusion free forming and the pressures generated in the extrusion process were recorded and analyzed. The extrusion pressure increased as the solvent volume fraction decreased. Air bubbles and particle agglomeration influenced the final properties of the product and caused pressure to fluctuate. An aging process for the paste was introduced to obtain more ...
Visualization and process understanding of material behavior in the extrusion barrel during a hot-melt extrusion process using Raman spectroscopy Universiteit Gent
Twin-screw extrusion of montmorillonite filled polypropylene : (re)processing and characterization Universiteit Gent
Molecular scale-driven upgrading of extrusion technology for sustainable polymer processing and recycling Universiteit Gent
Our polymer material and processing industry heavily relies on single- and twin-screw extrusion technology. To facilitate a circular economy technological upgrades, bridging experimental characterization techniques and the predictive power of modeling and software tools are although indispensable. The current work highlights engineering challenges and solution strategies to make (reactive) extrusion technology more sustainable and reliable. ...
The impact of hot-melt extrusion on the tableting behaviour of polyvinyl alcohol Universiteit Hasselt
There is evidence that processing techniques like hot-melt extrusion (HME) could alter the mechanical properties of pharmaceuticals, which may impede further processability (e.g. tableting). The purpose of this study was to evaluate if HME has an impact on the tableting behaviour of polyvinyl alcohol (PVA)formulations. Mixtures of partially hydrolysed PVA grades (with a hydroxylation degree of 75 and 88%) and sorbitol (0, 10 and 40%) were ...
A comparative review of binder-containing extrusion and alternative shaping techniques for structuring of zeolites into different geometrical bodies Universiteit Gent
Zeolites are crystalline metallosilicates displaying unique physicochemical properties with widespread applications in catalysis, adsorption, and separation. They are generally obtained by a multi-step process that starts with primary mixture aging, followed by hydrothermal crystallization, washing, drying, and, finally, a calcination step. However, the zeolites obtained are in the powder form and because of generating a pressure drop in ...